This is a transformer, built with a strict construction schema, like every transformer.

Besides the clever construction that we saw, traditional Japanese houses is a fascinating subject. In the city, houses are small and well-designed. Doors are sliding and temperature is low. Walls are very thin but it can resist to one earthquake every month.
Temples are build all in wood, assembled without using one nail. Every 20 years, they can disassemble it, look if there is a rotten piece , replace it, and build the temple again.